/**
 * Copyright (c) 2008 - TheNittyGritty - Thomas Brekelmans
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package nl.thenittygritty.specification 
{
	import nl.thenittygritty.specification.AbstractSpecification;
	
	/**
	 * AndSpecification accepts two specifications in it's constructor and 
	 * implements its isSatisfiedBy method by checking if the candidate is 
	 * satisfied by both of the stored specifications.
	 */
	public class AndSpecification extends AbstractSpecification 
	{
		private var specificationA:ISpecification;
		private var specificationB:ISpecification;
		
		/**
		 * Creates a new AndSpecification and stores the given specifications.
		 */
		public function AndSpecification(specificationA:ISpecification, 
										 specificationB:ISpecification)
		{
			this.specificationA = specificationA;
			this.specificationB = specificationB;
		}

		override public function isSatisfiedBy(candidate:*):Boolean
		{
			return specificationA.isSatisfiedBy(candidate) && 
				   specificationB.isSatisfiedBy(candidate);
		}

		/**
		 * Returns a reference to the stored specification.
		 */
		public function getSpecificationA():ISpecification
		{
			return specificationA;
		}
		
		/**
		 * Returns a reference to the stored specification.
		 */
		public function getSpecificationB():ISpecification
		{
			return specificationB;
		}
		
		/**
		 * Returns the name of the class in a String.
		 */
		public function toString():String 
		{
			return "AndSpecification";
		}
	}
}
